1. Check whether the keyboard is connected to the bully.
2. If the keyboard is external, did you press the "Numlock" key?
3. If you press the "Numlock" key and press the "Numlock" key again with an external keyboard, it will return to normal.
If you haven't connected an external keyboard recently, you can find the "Fn" key in the computer keyboard, which is also called the "second function key", because when you press this key and then press another key with two functions, that key will have a second function.
5. Then find the "F8" key, because the second function of this key is the function of the "Numlock" key. Press the "Fn" and "Numlock" keys at the same time, and the keyboard number keys will be unlocked.